Automatic fire-alarm.



H. & F. BARTON.

AUTOMATIC FIRE ALARM.

A'PPLlCATlON FlLED IUNE29. 1914.

1, 176,809. Patented Mar. 28, 1916.

#3 WW 7\ .7 I 1 g J j J" 11 ZW- WI TIVESSES INVE/VTUHJ {1L I 7/! Z W J? @44/ 214 ATTORNEY THE COLUMBIA PLANOORAPH co., WASHXNGTON. D.

HERBERT BARTON AND FOREST BARTON, OF ENDICOTT, NEW YORK.

AUTOMATIC FIRE-ALARM.

Specification of Letters Patent.

Patented Mar. 28, 1916.

Application filed .Tune 29, 1914. Serial No. 847,851.

To all whom it may concern:

Be it known that we, HERBERT BARTON and FoREs'r BARTON, citizens of the United device.

States, residing at Endicott, in the county of Broome and State of New York, have invented certain new and useful Improvements in Automatic Fire-Alarms, of which the following is a specification.

Our invention relates to an improvement in automatic fire alarms in which an electric alarm bell mounted at any convenient point within a room is caused to ring automatically as soon as the flames of fire come in contact with our device and it has for its object to provide a cheap, simply constructed fire alarm adapted especially for residences, hotels, manufacturing plants and buildings of that character. I

With these objects in view our invention consists of certain novel features of construction and arrangement of parts as will be hereinafter fully described and pointed out in the claim, reference being had to the accompanying drawings in which Fig. 1 is a view in elevation of our device partly in cross section. Fig. 2 is a diagram matic view of our device mounted in a room. Fig. 3 is an end elevation of a part of our Fig. 4 is a fragmentary sectional view of a detail of our device.

The same reference characters denote like parts in each of the several figures of the drawings.

In carrying out our invention we provide or make use of the ordinary electric alarm bell A mounted in any convenient point on the side of the wall or building in which our device is used for fire protection. We also provide a base plate B, which ismounted on the side of the wall or building at any con venient place. Also mounted on said base plate we have the support O projecting out from the surface of said plate B for the pivotal mounting of the container D. Pivotally mounted between C and B, we have the cylindrical container D, having within it the metal mercury. Mounted in the head of container D, we have the pin 6 surrounded by the non-conducting material f, pin 6 connects with or has mounted upon it nut cap 9. Below the support O, extends an arm F having a T-shaped end at. Mounted between the end of arm F and the end of cylinder D, we have extending the coil spring G. From the upper end of cylinder D, extends the battery wire 2 connecting with the alarm bell A. From the pivot 3 in support C, on which is mounted the container D extends the battery wire 4:.

At the base of cylinder D, is fastened two cords 5 and 6 of any suitable material which fire will attack and break. These cords pass over suitable pulleys 7, 7, and are united by the coil spring tension piece H.

In the operation of our device when the flame burns off the cords 5 or 6, immediately the cylinder D tips downward, pulled by the coil spring G. The mercury E thus by gravity passes to the other end of the cylinder D and contacts with pin 6 and thus an electric circuit is made, between the negative and positive poles of the battery I and thus is communicated with the alarm bell A which causes bell A to ring and an alarm of fire is thus given from any room or place in which the fire starts and in which this device is in operation and mounted. When the cylinder D is in the position as shown in Fig. 1, the mercury by gravity is at the lower end of cylinder D and by reason of the nonconducting material f surrounding pin 6 there can be no electric circuit but when cyl inder D is tipped downward the mercury passing to the other end of the cylinder, forms an electric circuit. The spring H always keeps the cords 5 and 6 at tension regardless of atmospheric conditions.

Having thus described our invention what we claim as new and for which we desire Letters Patent is as follows:

In an automatic fire alarm, the combination' of an elongated receptacle pivotally mounted intermediate its ends and adapted to contain fluid mercury, an inflammable cord is to normally maintain the receptacle in a tilted position to cause said mercury to be out of contact with said electric contact, a tension device for said cord, and means operating to tilt the receptacle in the opposite direction upon severance of said cord to cause said mercury to contact with the electric contact to complete a circuit.

In testimony whereof we have affixed our signatures in presence of two witnesses.

HERBERT BARTON. FOREST BARTON.

Witnesses:

E. G. JOYNER, M. F. TERRY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

